to bi-wire or not?

I've gotten very good results with "diagonal" bi-wiring using jumpers. FOr example the red speaker cable connector goes to the red treble terminal and the black goes to the black bass terminal, then the jumpers connect the other terminals. This is Nordost's preferred connection method--they no longer make bi-wire cables, shotgun only....

Stringreen has ended the discussion: if the speaker is designed to be bi-wired, then bi-wiring will optimize sound reproduction. But, a cable capable of being bi-wired (designed to be bi-wired) is in order. The classic example of a bi-wired speaker is the Tannoy Westminster Royale SE/GR series … which is  (SE version) the speaker I use. Cardas bi-wires cables BECAUSE THEY ARE DESIGNED in such a way as to be capable of being bi-wired. I'm poised to replace my Cardas with MIT Magnum M1.5, which MIT bi-wires if ordered in a bi-wired configuration. If a cable isn't designed to bi-wired, it cannot be satisfactorily bi-wired. 

Andynotadam … but Nordost will bi-wire their cable if requested. I asked them this question about two weeks ago ($600USD)' to bi-wire a set of Vahalla 1 non-bi-wired cables. They can do so because the cable has the capability of being bi-wired. Not all cables are capable of being authentically bi-wired.

I've revisited the topic of bi wiring now that my system has changed since I last posted my observations. What I've found is this:
Before I settled on my present system, using the bottom two posts gave the best results (with jumper cables). It is also the way JBL recommends the way to do it when using a single set of SCs.
Using the top two seemed to confuse the sound and rob it of it's naturalness.
Using the bottom terminal for the Plus cable and the top, opposing side for the Neg cable audibly improved the sound, making me wonder if going full bi wire (or using another pair of SC) would result in bigger gains.

If lazy, I would have stopped right there as the sound was more alive,  believable, and fuller sounding. Scrounging through my older cable sets I came up with some Tempo Electric 16GA solid silver SCs with bare wire ends and used those for the top terminals and my Cabledyne Ulitmates  (10GA) with locking banana plugs for the bottom two bass terminals.

What I got was the most believable sounding presentation yet. It's more relaxed and natural sounding compared to before. There was so much MIA in regards to background playing, singing, etc. that this new set up revealed. The only downside, if it is that, is a lessening of the bass in regards as to how forceful it can sound. It's there and it's detailed, complex and full of timbre and grit but it doesn't overpower like it used to. It could be that it's now properly presented compared to before. In fact, the bass I'm getting is eleciting sympathetic vibrations higher up the scale than before and at lower SPLs.That seems to indicate it's a lot more accurate.

It seems that some speakers are truly bi wirable and not done for the sake of gimmicks. I called the dealer where I got them from and they assured me that they are truly meant to be bi wired to sound their best.

Now I'm at that point where do I settle with the awkward look of the competing wires or go for a set of SCs that are purpose made and look the part. A high end dealer I conferred with just laughed and said he'd just keep it the way it is and not be in a hurry and just enjoy the music.

One more thing I noticed is that after hours of playing, my integrated runs cooler to the touch, barely getting warmer and I thought, if anything, it'd run a bit warmer because of the extra load that another set of SCs would bring to the equation.

All the best,
Nonoise

Cool experience @nonoise. If you have the opportunity, try running cables of identical topography to your speakers or even better, identical pairs of cables to your speakers. IMHO the best deal in speaker cables right now is Wireworld. I got two 8 foot pairs of Equinox 8 cables made of the purest copper currently available for a mere $1400.00. In the 3 and a half years I’ve had my speakers I have the most spacious, detailed and musical sound ever. I consider that a deal at the price. Good luck with your system. 
Enjoy the music.