I think I'd have to agree with what others have said so far - after having gone below 100% boards, I don't think I could ever go back. I'm trying to go smaller (40% maybe), but we'll see!
The desk space and ergonomics have a huge thing to do with it for me. I love how everything is arranged now as well. The only reason for a 100% board is working with numbers to me. And honestly, depending on the function layer for the arrows, 60% boards can be very good for text editing. It's now second nature to hit FN + pl.; on my HHKB for the arrows. I would PREFER it on my other 60% board instead of Caps Lock (DIP switched to FN) + WASD. But regardless, you get used to it is the thing.
I used to sell phones during college while working at a large electronic retailer that didn't always have the Best deals (*wink*). People wouldn't buy a phone because of it's keyboard. Even though you can change the keyboards on phones (I know, I know, ewww touch screens). But I guess my point is that you can make it whatever you want, and you will get used to it and probably love it. If not, change it to how you want it. Obviously, via a function layer, but it can be done.
That's just my 2 cents.
