Anyone here use Schubeck lifters ?

I, for one, seriously considered the schubecks for my magnum motor because they had that lifter version with a rounded bottom end. Compared to wiping a cam, The cost of the schubecks (last time they were available) would have been worth it to me, and I don't plan on swapping cams very often.
For a STOCK build, I doubt they are worth it.

I'm hoping to hear from some others with experience with them. Ehrenberg at mopar action is the first and only user I have heard directly.