I mounted my Ray/Ralph combo tonight (really smart to put tires I never have used on a day before a race!)
Here are my quick notes;
-Both tires measured at the manufactured specified weight +/- 3g
-Both tires mounted on to my rims with no hassle, by hand (no tools) and inflated with ease.
-The racing ray and ralph share the same furthest side knob location, shape (and I believe depth).
-Brand new out of the box mounted on my 30mm ID Alpha wheelset they measured 2.28" (I am disappointed somewhat on this, I expect after some flex/riding they will land on 2.3")
The tires on my road feel very very fast, like I hardly had to pedal and I was in my 10T, on a side note the Rekon Race 2.4 measured 2.44" on these rims.
I will see how these do this weekend as I will be heading to a mixed condition race (rain forecasted) with some technical sections.