I have some old crack gloves and find them really useful for warming up. For hard cracks I prefer tape or nothing, but for easy cracks they are good enough, and protect better than even a good tape job. And it is irritating to tape up for just one route, crack gloves are much easier to get on and off. On Czech and Elbe sandstone rubber handjammies are better than taping imho.
I have always recommended people to either tape up or put un gloves to learn jamming. No one has good coordination for jams in the beginning, and goobies are just horrible. Once you have good coordination they are less necessary, but for certain limestone cracks they increase the comfort enormously.