The transaction of ClickGem is safe and anonymous.anyone can easily transact which can be checked by blockchain.so it is safer to transact through clickgem..
most coins these days are anonymous ad they actually claim to be fast but the things is when traffics begin to load up on the blockchain then it turns to a different story i just hope it wouldn't be so with clickgem scalability is actually a big issue for most coins
it depends on amount, big amounts are overall big problems ... starts with bitcoin and in the near past we already had the experience also with ethereum. CGM and similar projects has to be sure of their technology that they seriously can offer these quick transactions and less fee continuesly.