i definitely would when i have exhausted the use of my k20d, i.e. as a replacement.
i don't see any compelling reason to get rid of a perfectly working camera whose flaws i can live with for now.
the reason why i dumped the k100d was the painfully crippled DR, which meant i had to hdr a lot. it's still a very able camera to me, and i miss it sometimes...
Would tentative reports of K-5 DR at low iso potentially exceeding the S5pro sway you?
Also like to add that the D7000 launch is the best thing ever. Hoya originally wanted to price it like a 7D / D300s but realised that there is no way they can compete with the D7000 priced so competively.