That was my train of thought as well, ill do some tests later tonight with a few different impulses (hopefully i have a SS power amp impulse somewhere). I post the results back here once im done.
Doesn't really matter to have a SS powered impulse right now, the test is ore of a, I think a real power amp will be more dynamic than a simulated static power amp in an impulse. Impulses are linear in operation, they cannot provide the dynamic changes that a guitar power amp can provide, as it is a non-linear function. I do think just removing the power amp out of the impulse would do wonders, let alone get the coloration and non-linear distortions out of a real amp or even an amp sim.