Telus dealer's should have no problem letting you see them side by side. At first they didn't want to let me handle either one of them but when I told them that I'm not about to sign a 3 year contract without looking at what I'm getting they agreed and allowed me to play with both.
As to your question, it seems to me that the Telus keyboard is bigger and easier to manage, but since that wasn't the focus of what I was looking at, I'm just going from (a rather poor) memory. I'd go back to a store and TELL them you want to see both phones.
Phone: HTC Amaze 4G (S-On)
ROM: Stock Telus ICS (Rooted)
Headpones: B&W C5, Sol Republic Amps HD, Shure SRH840