A couple of issues on this. First the part getting cut in a radial arm saw is sitting on a wood platform, ie maximum fire and smoke, and endless ridicule from your wife as you make a mad dash to get a pitcher of water to cool everything off.
If a wheel comes apart on a chop saw, it is under pretty good control. The relationship of the material to the blade and work surface on a chop saw means that if it catches, all it does is buck the handle upward. On a radial arm saw, it is doing a climbing cut, trying to come at you. It can hang up, walk the cutter up over the metal, destroying the radial arm saw, or at the least, severely warping the housing.
It can be done. Just be VERY careful.