One thing to be aware of with the Heritage revolvers, in case you are not already, is that they do not include the safety features of some other single action revolvers such as those from Ruger (transfer bar, etc). They operate pretty much in the same fashion of the Colt Single Action Army, and are not drop safe. They should be carried on an empty cylinder. Loading it all the way up is fine at the range, but if you want to carry it in a holster or keep it loaded in your night stand for some reason, hammer should be down on an empty cylinder.
My son in law has one of these, with the interchangeable 22LR and 22WMR cylinder. I've toyed with getting one of these, versus one of the Ruger Wrangler's. I know the Wrangler would be much better finished and built, as well as being drop safe. The advantage to me of the Heritage would be the ability to use either 22LR or 22WMR, and of having a 9 round cylinder versus 6.