I have, but there are some bugs (like one Fork found) that can trip things up in some cases. Fork's bug is on my todo list.
Forks bug causes crashes when you do a lot of object allocation sometimes, even the internal objects allocated by binding loops.
At least I think so. I have code that can predictably crash R3 that I think might be related to Fork's crashes, but I don't have Fork's crashing code so I can't test it. But I do have my crashing code and know how to fix his bug, so I'm hoping that will make my crash go away too. If it does I'll let you know so you can include it in RebolBot.
Plugged in Martin Johannesson's shrink script ... note that "Appologies" is mispelled in the script