Sounds tempting to get them to try it out . . . but I would avoid mixing your work world and future company/product world, keep them isolated, you have your con

Sounds tempting to get them to try it out . . . but I would avoid mixing your work world and future company/product world, keep them isolated, you have your contract that states it's your IP but if this thing is really awesome and fills a need they are looking for they could change their mind or create a legal hassle for you. Maybe not likely but possible. I would contact other potential users of the product while staying away from your direct competitors to your day job just to keep things isolated. Grow some users/revenue then think about putting in your notice once you reach a level of revenue that you are comfortable with. Signing up your current company isn't really a way to show their is a market for your product since you have an inside connection. Grow an email list and test out signing up people/companies you don't know. Good luck with your company, sounds promising.