That's really a tough call.
The Heritage guitars that I've seen were very nice...including the archtops, the semi-hollows, and the LP-styles, but I never played one. We had a Heritage dealer here in our small town for a while, but unfortunately he opened a shop across the street from the Fender/Peavy dealer (who was actually a businessman) so it didn't last too long.
At the time I wasn't in the market for an electric (I've owned 3 from 1982: a 1963 Gretsch Chet Atkins Country Gent, a Strat, and my current LP Deluxe, not counting the Ric 366/12 since it was not a six-string) but, as you may conclude, I like quality axes.
I would happily have gone for a Heritage, and, in fact, I'm sorry to hear that they're going away. They look like Gibsons from the '50s.
Is resale a consideration? With a Gibson, you can generally recoup (within reason). With a Heritage you might be reduced to flogging it on eBay with a **SUPER RARE!!!** banner like you see for the mutts people try to peddle there.
If the seller has a return policy, I'd be tempted to go for it. The last of the Kalamazoos. Are the pickups a standard humbucker size? If so, you could easily tailor the sound to your liking.
Let us know what you decide.