If I get what you are doing, you'll have both amps connected and one will be on at a time. The problem with that is that the amp that is not on is now a load to the other amp and you will be feeding the amp a lot of current. Probably a good way to start a fire.
bi-amping with Tube and SS amp
Bi-amping question:
Is it possible to use a tube amplifier to run my HT speakers without disconnecting HT SS amp?
In other words, can I connect a tube amp to my L R channel using top binding posts and use the tube amp for music. The HT amp will be off but remain connected via bottom posts.