One solution that worked really nicely for me is to re-map the left and right softkeys so that when I press and hold them they do cut/paste...
I'm using ae button plus to do this..
Also - the pcm keyboard does this - but I can't get it to work... This keyboard is a *must-have* on these phones.. (I'm getting faster on it then the hardware keyboard..)
Just hold down the enter key on this keyboard to get the cut/paste menu.
http://pocketcm.com/keyboard.php
-mark