Ha, well, my wife says that I can do all that stuff on a regular bike... which is true. It's what helped me convince her to let me buy my $800 (CDN) Trek 7500fx. But to convince her to spend thousands on what she views as one of the most rediculous things she's ever seen on three wheels..... that's a bit harder. I suppose it might help if she were as avid a cyclist as I am.
I'm working on convincing her to let me get a simple recumbent trike, hopefully that will happen next year.
Oh, and as for velos... Exactly how good are they in wet, windy, rainy snowy and cold weather? All-weather capability is probably my strongest argument for getting a velomobile, but if it can't handle everything that mother nature throws at me (within reason, of course) then my argument goes out the window.