"Can LE use this information to go after the clients to make arrests for solicitation?"
Probably not to make arrests, because a name in a book on its own is not enough evidence to make an arrest. But they might use it as a basis for opening an investigation into the client, putting the client under surveillance etc., that is IF they had the time and the resources.
The only reason why this is not happening n a more regular basis is simply that LE does not have the resources to go after all these people.
Basically everyone in this hobby is wise to be ultra-careful.