My personal strafejump record is 255, which i only managed to make 2 times when strafejumping normal..
But a few days ago I was in Son-of-bitch and tried making the 255 with wallspeed and I managed to make it 4 times in 15 minutes.

Here is a little demo of a wallspeed strafejump:
http://rapidshare.de/files/10507432/wallspeed.dm_2.html
I think I might be abled to do 256 or bigger with it, but i didnt really try much!
Now some say using wallspeed with jumping is the same as cheating.
I'd say its just another glitch in the game same as strafejumping, and there is nothing wrong it!
But I just want to know how you guys feel about it...