John, are you considering wood, plastic, or CF electro props? CF is ok.
Some of them are, some of them not. Our newest hollowed CF props are not, they are only electric.
http://www.maxbee.net/props/props.htmHowever I know there are also hollowed props for IC with little different construction of hub, so it is always good to check. I think Mejzlik makes them, but much larger diameters then we use.
In any case usage of electric props on IC is not good idea, but it does not mean that all electric props are safe on our stunters, I remember that long use of old APC props (before redesign with thicker root) did visible slowly growing cracks because of vibration in corners. Designers probbly did not count with such effects during flight. R/C guys do not routinely fly tight corners.