For those interested in whether SR works I posted these on DPR, so I think some may also be interested here. These are my first foray into SR from my new K10D.
K10D + FA*80-200 f2.8 @ f5.6, 85mm, 1/40sec, ISO100, SR on. If we assume the 1/focal length x 1.5 law then this was shot at an equivalent 127.5mm, so it should have been 1/125sec. 1/40 means about 1.5 stops extra.
K10D + FA*300 f4.5 @ f5.6, 1/50sec, ISO100, SR on. If we assume the 1/focal length x 1.5 law then this was shot at an equivalent 450mm, so it should have been 1/400sec. 1/50 means about 3 stops extra.
K10D + FA*80-200 f2.8 @ f5.6, 170mm, 1/50sec, ISO100, SR on. If we assume the 1/focal length x 1.5 law then this was shot at an equivalent 255mm, so it should have been 1/250sec. 1/50 means about 2.5 stops extra