If he is a legitimate seller he's done a fantastic job of making himself look incredibly dodgy.
On ebay for years, only 1 sale so far, and that was in 2009, absolutely no activity since then.
Description is as you say very scant. 'Unwanted gift' and 'a couple of years old', for 2 rather different bikes.
Payment by paypal, pickup in person. I'm getting uneasy.
Honestly, I don't know, but enough alarm bells have rung already for me to be cautious about it. It's possible it's someone who knows little about bikes who really has got 2 he wants rid of and has just rediscovered his ebay account.
If you go through with it (and I'm not saying not to) be very wary of anything odd. I've had requests to meet and pay outside of ebay before etc.