I've yet to play Lomax, even though I really want to. Like Simon said, I've heard people draw the comparison to Rayman, which means I'm even more interested.
My main problem is that I'd like to play the game on real hardware first, but since a physical copy of Lomax is considered a rarity it goes for way too much on ebay for example. I'll keep waiting though, maybe I'll one day find a good deal with case, manual and everything..
Since Lomax is an obscure spinoff of the Lemmings series, I don't think we're ever going to see a comeback. Maybe they will release Lomax on PSN, though even the chances of that happening feel pretty slim.