Besides, Richard Paterson will kill you if he sees you holding the glass like that.
(Oh, get over it, Mr Tattie Heid.)
Glencairn, copita, snifter, whatever...handwarming certainly does have a bearing on the nose and palate, which is why I do it, smudges be damned (and why Paterson tells you not to, for that matter). It's one of the reasons I'm not so crazy about the Glencairn any more--the thick base makes it difficult to wrap the hand around the bowl efficiently. Others here have complained about the thickness of the glass slowing warming, but I don't think that in itself is such a bother.
The only pubs I've seen the Glencairn in, off the top of my head, were the Bow Bar in Edinburgh, the Pot Still in Glasgow (I think!), and the Lunar Rogue in Fredericton, New Brunswick. There have probably been others in the UK, but I don't specifically recall. It's a shame it's not more widespread, despite my misgivings for the glass--its sturdiness is what suits it for the pub.