never folding and might consider shoving if the dynamics are right. His c/r % should give u a clue about whether he does this often enough for it to be a bluff. AF 3 ppl might not take check/call lines with flush draws on this board often enough for us to be dominating other flushes. He might take check/call lines with 10-9 sorta hands coz the boards pretty good for ur perceived range and he wouldnt wanna get raised oop deep with a weak one piar hand. If he thinks ur spewey then ur probably pretty polarized after betting the river and if he has a 10 he might just ship to look polarized as well and hope to get called by a really weak bluff catcher. I think he could do this for value with QT, 66 or 44.