That's a very interesting response, j/j. I wonder how many trainers abandon that sort of sense, though, and resolutely try to place the straight-shouldered, straight-pasterned animal over unsuitable going (i.e., heavy or soft) when it's pretty naturally going to be a very stiff-actioned creature, probably a daisycutter, too? I know of at least three I can think of, right away, including one trying to put such an unfortunate beast into chases! (Natch, it failed to even keep up, let alone place.)
You could say, horses for courses, but conformation for courses, going, and the type of endeavour, too. (Although it's not quite as snappy!)
I've no idea if the vet's right, since I don't know what stats support his statement - they're quite possibly anecdotal, based on just his experience, but I'd venture that poorly-conformed horses are by no means as flexible/versatile as those without build problems, as you aren't able to pretty much chuck 'em onto any course and assume that it, in itself, won't create running problems for them.
If it comforts you, Troodles, it's honking down here in not-so bright Brighton, and I have two friends visiting from Derbyshire and Scotland who today were setting out to trundle round the city for fun. At least we're off to Hove Dogs tonight, and will be under cover in the restaurant.