For me it doesn't matter where stored your altcoins whether its in a cold,hot or even hard storage the question is does the project or altcoins that you are holding is active or let say that the team are following their roadmap and really doing what the project should be.Because if not its useless.For me wallet is not important theimportant is you choose the right project that you can gain profit by shot or long term.Nowadays holding altcoins is not much advisable unlike before so much better if you gin profit from it sell it and try to look for the other one.