I just started recently too and I LOVE it! It doesn't sting at all (for me at least) and now I don't have to wear mascara! SO worth it, imo!
My lash technician told me that tinting your eyelashes actually makes them more receptive to mascara and helps mascara go on better- it's like a really good primer. Putting mascara on now makes my eyelashes look insane! I am so happy with it!