Personally, I find the clammy feeling with synthetics is only related to polyester baselayers such as Coolmax or Malden Mills products. There is one brand of synthetic out there that positively will not feel clammy, and that is Helly Hansen's Lifa brand of polyproplyene base layers.
Don't get me wrong, I love wool and I wouldn't trade my wooly pully sweater for all the beers in Canada but to be flat out honest, I truly believe it to be lacking as a baselayer. The purpose of a baselayer is to transport moisture away from the skin and into the thermal layer where ideally, it is carried into the outside ambient air by the (hopefully) breathable outer layer. And to put it frankly, wool just doesn't cut the mustard in terms of moisture transportation. Warm? Oh gosh yes, it'll keep you toasty on days when you'll be shivering you rear end off in synthetics. I suppose this biased point of view of mine comes from doing high energy, fast paced sports where I'd be soaked to the skin if I didn't wear synthetics. And while I understand that bushcraft isn't really a fast paced sport, I do think that synthetics should not be dismissed outright!
Mind you, that's only my two cents!
Adam