I own both a Rossi 92 in .45 Colt and a WInchester Model 94 Trapper in .45 Colt.
Between the two of them, I prefer the Rossi due to it's smooth (after clean up) action and generally better accuracy. The Model 94 Trapper spends a lot less time on the range, but it's got notably better wood and is over all better looking.
The cowboy action shooters bad mouth the Model 94 as it was never really designed for pistol and the action is technically not as strong.
There is some truth to the criticism in terms of the Model 94 action being longer than needed and having a toggle link to increase the bolt throw for longer rifle rounds- something that is not needed for the .45 Colt round - and over all not being quite as smooth or fast cycling. The strength argument is also true, however the model 94 operates just fine at 42,000 psi with the .30-30 etc, and the .45 Colt, .44 Mag and .357 mag don't come close to that, so while the Model 92 action is stronger, the Model 94 action is still more than strong enough.
And I have never had issues with reliability of straight wall pistol cartridges in the Model 94. The Model 94 detractors trot out the fact that the Model 94 was never designed to sue them, but they seem to forget that the Model 92 was also never chambered for a straight wall pistol cartridge either, until relatively recently. The .45 Colt was never intended for use in a rifle and was not used in any lever action rifle or carbine during the black powder era - for very sound design reasons (but that's a whole other thread).
I do like the case hardened receiver with the round barrel carbine pattern of the Model 94 Trapper. Rossi has case hardened receivers, but they are all on the 20' and 24" rifle pattern, octagon barrel, no barrel band guns. And the case hardening on the Model 94 is actually case hardened - and very hard. Drilling and tapping the tang was an exercise in patience to get the hole started.