Sorry, just a trivial question (I want to be prepared )

Would any ETH wallet, like Coinomi, be ok to join the ICO?

I'm really interested in this project and I think I'll join the ICO.
Nevertheless my main concern is this:

I understand that the power of this project will be the marketplace, meaning that users will have a good service if the market will be populated by many service providers. Unfortunately, at the moment, only three companies are already in the game and they are far from being well established firms. They are companies created by Change Team's members.

I was very brief but I think my point is clear. What do you say?

Thank you