Jon, have you checked the accuracy of the GPS on its 50 hour setting and the altimeter? All the early testing said that both were very dubious. (I guess sampling a route once a minute is going to lead to a large degree of error on any route that isn't primarily straight).
Personally I'm dubious of the worth of the Fenix. Most of the stuff it can do can be obtained from the 310XT which is a third of the price and also adds in all the focused running/cycling workouts and metrics. Plus for the same price you can get a Suunto Ambit, which is all the Fenix and a lot more, in a more robust package that looks far more professional. IMHO, of course :-). I know where my £350 is going, and it won't be to Garmin.
Not yet, but it's on the list for late 2012 or 2013, depending how long it takes to recover from the Lakeland 100 next August.
Most rounds do involve a support crew and runners, but there are those that do it solo, and a few hardy souls who attempt a solo winter round.
Also agree with Nik that a lot of the huff and puff is down to personal egos, although again I can't see why. I'd quite like to see Kilian do it, to see how with all the support of Salomon and modern technologies he compares with Mr Bland.
coming to the party a bit late here, but I've been using an EPZ epic smock for running for a year now (a v lightweight one, not a warm pile one) and it's the best waterproof I've ever had for active use, beating all my previous Goretex, Paramo, and Kamleikas for a combinaiton of waterproofness & breathability. Plus having done several 50+ mile ultras in it wearing a pack it seems, plus many other shorter outings, it's not showing any signs of wear.
It's the only waterproof I've ever been able to wear all day. Previously I've always had to also take a windproof with me and nly got out the full waterproof when it was peeing down.
Not directly relevant, but hopefully helpful interms of durability and comfort.