Since it's Heavy Dust Season here, I decided it would be prudent to just buy another air filter so I don't waste down time processing the only one I have, which is the original stock filter.
I have no issues with the stock, but thought if I was going to get a second filter, I might as well try a Uni. People seem to like them and they're cheaper than an OEM filter.
Looking around on eBay, I found 2 different offerings and 2 of the filters stated to fit a 2009 (it actually seems they fit all years or a very wide range of years) look different.
One is more of a dome shape and the other is shaped like my OEM filter.
The dome one is a better deal. Listing states it's for a KLR650 and I'm guessing maybe it's just a generic Uni filter photo they've used instead of a photo of a KLR-specific filter. I think if I order it, I'll wind up with one that looks like the one in the second photo below.
Any info from Uni users would be appreciated before I order, since if you don't get a good seal on your air filter, you might as well not use one at all.