Sharps tend to tangle on knits, synthetic and stretch fabric, but, sure, you can get away with it. Sharps tend to get microscopic burrs on the points after some use, and that is one culprit.
I have to disagree, Roger. Rasant is good stuff, Australian made, I think, and somewhat rare in the US, but the problem is that it is a cotton-wrapped polyester. It is better quality than DualDuty but the cotton suffers all the ills common to cotton, wetting out, mildew, rot. It is about half the breaking strength of Gutternans. I would not use it for anything but test pieces or household items. That said, lots of folks have used cotton-poly thread for outdoor gear. It used to be the recommended thread type on the theory that 1) cotton swells when wet and seals needle holes 2) home machines don't like synthetic thread. Neither theory is true, but long believed.