Does biamping w/ SS + tubes work?

Your last posts suggests that you might be getting in over your head if you try bi-amping with different types of amps. Though it might appear to be in contradiction to the previous advice, using a ss amp on subs and tube amps on the main speakers (if they're tube appropriate), is actually the typical arrangement.

I've been actively bi-amping my systems(tubes/SS), since 1980. Was using a modded Dahlquist DQ-LP1 crossover MOST of that time. Now using a modded TacT RCS 2.2X. Always with transmission line woofers(very fast), and mostly planars(Acoustat & Maggie). Never had any problems at crossover points, when proper slopes were applied. Always has worked well for me.

I've been biamping my Von Schweikert speakers using a pair of Double Kronzillas on the top and monoblock Spectron Musician III Mk2 amps on the bottom. The Spectrons provide a very high damping factor on the bass drivers and the Kronzillas do their SET thing on the top. I've never noticed any sense of discontinuity in between the two. I'm passively biamping them, connecting to the M/T and bass modules without any other crossovers other than those in the speakers. The only additional item needed is an attenuator inline with the higher sensitivity amp. In this case, it's the Spectron, which is good since I don't need to put anything in the signal path with the Krons. If you have a beefy solid state amp to start with, this path lets you use a lower powered tube amp for the top. Horses for courses.

Two different sound characters at the crossover point has not worked for me, but some people are more sensitive to this than others. You just have to try it.

I have also been very successful in combining solid state and tubes. Best of both worlds as far as I'm concerned. Match the output levels and let your ears decide.