I'm not sure of the Cimmeron models but I think you need to carry on an empty cylinder. Someone can correct me on that if I'm wrong. I do have various lever/pistol combinations. Of what you listed, I prefer Vaqueros for western types over the Blackhawk. I've filed my front sights down for 158 grain loads. Rugers come with extra high front sight blades to do so on Vaqueros. Trick is go slowly. Anyway, here's a couple photos of combinations. I've other combos and I've posted these here before but I can't be bothered taken anymore photos.
For 357s, a Rossi puma 92 added a marbles Tang sight for 75-100+ yards and steves front and rear sights for 25-75, with a couple Vaqueros and a S&W 686. The 686 travels in a Galco vertical shoulder holster. I knida embellished the double rig for the Vaqueros, I do have a plain set and a crossdraw set for them but no image:
Just to keep it rolling, a 44 combo, JM Marlin and a Williams peep with a 629 and a remington super mag 12.
And lastly a .22 JM Marlin 39 with a Williams peep and a Ruger super single six and /or a S&W 617 with a Remington 20 ga magnum.