I never done that, not that I tour too much anyway.
Unless it will become a common practice, I don't think I will ever do it either.
That would make me feel like I am forcing or begging someone to see me.
Not to mention, I would be mortified that some guys may not use punting SIMS and actually my text (even a smiley icon) would lead to some trouble in their families.

But it's great if it's working for some of you, perhaps if you agree in advance that's how you do it, it should be perfectly fine.