DT, If you get WTF and carry it on you (belt, baldric, pack, it doesn't really matter) it's back to the surgeon's table with your knees...

I'll pass on WTF. I only buy what I can see myself using. I could not justify buying something that:
1. I can swing only 2-3 times per day, or
2. have to get a gym membership and go and work out, just to be able to swing it a few times more.