It's a big key, and it's best not to attach a lot to it. If you must, use a 3-4 inch lanyard or something to extend the reach.
I've never had a problem with accidental shutoff. Mainly because I saw that it was a risk and took steps to avoid said accident: I moved all my crap off the main key ring.
And there's a proposed easy mod to move the key fob off of the key itself, eliminating the problem almost entirely. I don't have the link ready to post, but it's on the forum somewhere.