I do own the Hulk, Cap, Spidey, and Thor PFs. Things that impressed were the size and sculpts not the fabric. I did not feel the fabric added anything unique to the statue. I feel the fabric was added just for the sake of calling it a Premium Format. Like many others commented on, mix media works well on certain characters. If you had 2 of the same sculpt, but in different formats, I have no doubt the majority would prefer the sculpted one. I have no problem with the Hulk, but I did think SSC should've made it more detailed and dirty. It looks way too clean for my tastes. I'm one of those that do not think the Doom PF is a grail and it gets too much hype. The sculpt is great, but the tailoring is not imo.
Like many commented, mix media works well for certain character. Look at the upcoming Sabretooth and Wolverine comiquettes. You're telling me you prefer those instead of sculpted? SSC lost my business for those. They don't give me the wow factor. I passed on the upcoming Gambit because I did not like material used on the trenchcoat and the uninspired base. There was a custom action Gambit piece posted around the forums that gave me the wow factor because everything from the sculpt to the face was dead on Gambit. I get it, you buy what you like. After writing this, I'm ready to unload all my PFs.