I've tried that. All things aside, in business if there's even one important person you deal with (your investor?) you will have to install at least one of the

I've tried that. All things aside, in business if there's even one important person you deal with (your investor?) you will have to install at least one of the messengers they use. It's a question of the balance of power. And you'd likely end up having more than one VIP in your contact list anyway, unless you live a totally isolated life.