Toymachine, at first I thought the Pyre would be awkward and there would be no point in switching from my Houndstooth but I just found the pump stroke nicer and the same ergonomics as the blazer really pushed my into using it more often. Plus I play rough and I don't have to worry about the end of my barrel since I can change barrels.
I think Craig added another stabilizing rods to the pump in later models? I'm not totally sure.
And as Grendel wrote above, another nice feature on the Pyre is the the stab incorporated into what would be the blazer lpr chamber. Because of this you can run a 4 oz tank straight into it with an easy regulator.
But as with any example (as an Grendel and Toymachine wrote), try before you buy if you can.