Since I received my MintLP last week, I'll add my 2 cents to this discussion of the MintLP.
I was previously using Thom Makris' protractor (which is based on the same arc system as the MintLP). It turns out that, because of the much finer line of the MintLP, I discovered that I was slightly off at the null point, whereas it seemed right on the line with Thom's; likely because the line of his protractor is slightly larger than on the MintLP.
I don't have any experience with the Wally, but from my experience, comparing the MintLP with the Rega or other paper protractors (I've used a few if those in the past) is perhaps misleading, because the lines are quite a bit thicker than the MintLP.
On the point of the 10x loupe: it's very hard to use, specially if you don't have much clearance for the stylus (yes, with the Dynavector it must be quite easier, but with my Zyx Airy 3, it's tricky), but it's actually possible. It took me quite a long time to finally "see" the stylus/cantilever when doing the alignment, but it was so much more precise than the 5x magnifying glass. A bit nerve-racking too, because you have to get the loupe very close to the cartridge body...
And, yes it sounded better after all that work...
Cheers.
