This is an interesting question. Hopefully someone will do some tests and come up with an answer. I've found that SS is a major problem with the 100-300 although the anti-shock setting seems to help a lot, particularly if I keep the speeds up to 250 or higher.
Yes, is it a concern with my 100-300 below 1/200s. I could try to do some tests but it may be difficult to prove definitely.