MPC cards, in my opinion, are not bad at all for the stuff that I do (tabled shuffles, gambling demos, etc).
They have a traditional cut (as in the rounded edge is on the face, and the sharp edge on the back, and so I like them. They faro great on a table.
In terms of their coating... it's not a varnish type of coating like the Founiers or the Legends, and so MPC cards feel closer to USPCC than Legends.
The MPC cards are no way near as slippery as cards magic finish (that's a good thing in my opinion, because I absolutely hate magic finish!!)... I actually think they have a pretty good balance of slip and tack. Not as good as the Legends coating, but still, better than USPCC I think.
My only complaint against MPC cards is the way that corners get badly chipped when doing tabled faros. If they get that sorted, they'd be very good, I think.