First off, I kinda see both sides here. Reminds me of something that occurred within my little diving group recently where someone took something off my scooter without asking and it ended up getting lost. It was a little thing, and not worth getting upset over. But I was upset. Why? Well ... because they took it without asking. Had they asked first, it would've given me some feeling of control over what was mine, and losing it wouldn't have mattered in the least. But what bothered me was that they didn't ask first ... which I took as a sign of disrespect for something that belonged to me.
A basic rule should apply here ... if it isn't yours, ask first before using. Seems like simple common courtesy.
This really is a small issue (to my concern), but if I were in jlyle's shoes, I'd have been a bit peeved about it too.
... Bob (Grateful Diver)