That Day-long one looks wrong.....I've never tried one but i should imagine your 'nads are going to be totally squished from the way it curves up from where the buttocks are going to be!!
Bob, have you tried the buttpad route, a hell of a lot cheaper than a custom seat, if you haven't try it, or put something on the seat about an inch thich and see if it helps.
I like the Adv seat for being able (when riding solo) to move back for a stretch and moving around the seat when playing hard.
Corbin on the Adventure highly recommended, it was the first thing I changed. Also have a corbin on my speed triple.
Adventure corbin also has heating and backrest, both of which the Wife thinks are brilliant.
It is quite a bit wider than standard, but at 6'2" I don't have a problem with it. All day comfort, no numb arse at all.
Check with corbin as I think the seats are available in different finishes which is not explained on the website.