The short answer is yes. The long answer is you will throw your money away faster if you only use the black neoprene squeegees. They are generally rated between 180 and 220 degrees F and your typical hot pour crack filler is put down around 325 - 375 degrees F. The neoprene wears out faster becaues the bottom will split over time if you have guys that don't take care of them.
Compared to the red silicone blades, you don't have the split problem so they last longer which saves you money in replacing not only the blades themselves, but the labor it takes to replace the blades. The other problem with using hot materials on the black neoprene is that it becomes a lot more difficult to remove the rubber from the blade for cleaning. The dried, cooled rubber peels right off of the red silicone blades but sticks to the black neoprene. Cold pour crack fillers on the other hand are usually water-based so washing off the left-over material from black neoprene is no big deal.
If you're doing hot crack filler, you should use a high temp rated silicone squeegee blade. If you're doing cold pour only, black is fine. If you're doing both hot and cold, you can't go wrong with the red.
