Sold mine and wish I had kept it. The 2.8II is fantastic, but heavy to carry.
Zen
I think that sums up my decision. I'll keep it for now and see how much I use it over the next 3 months. If I don't use it, I'll sell it, but everyone's posts just made me realize how great it is to have a small telephoto lens, too. Thinking about it more, I often take it with me when I
might need telephoto lengths, even if I'm just planning too shoot with my wider lenses (e.g. architectural work).
I'd like to thank everyone for their replies!