You have not met many women then...the SRR's job is not direct combat, they an intelligence gathering unit and sometimes women can be very usful in UC work ect the women members of the SRR go through the same selection as the men, less of the walkies in the mountains then the SAS/SBS more of the psychological elemnts....probably harder in it's  way then SAS selection, you can train to march but how do you train your mind?

Women can be the most ruthless creatures in the universe, trust me on that.

Yes there is, it just needs to be attuned just like a mans, any fool can kill at the drop of hat, it takes someone with remarkable strength of will and self control who only kills when needed, there are women SRR members in action around the place right now, if there were not up to it they would not be there, look up the Female US SGT awarded the SS for leading an assualt on an Iraqi trench line...she killed something like 6-9 BG's in 20 minutes of close combat

Amen to that.

actually the ARW will allow women to try out for selection, i'm unsure as to whether or not any have passed through so to speak but the possibility's there

There are other reasons as to why women aren't allowed in SOF units, and they have nothing to do with toughness, reasoning, or anything similar. Without going into details, it mainly involves hygien and physical attraction.