orchid, I don't know how to answer this one.
Men probably approach starting a business entirely different than women do. I know few women who have started from scratch. My mom did and was very successful. She was the primary bread winner for our family. She definitely was not all talk and no do. She produced plenty of fruit.
The fact that your partner is doing this for the fun of it should give him an advantage. If it were out of necessity, he'd probably feel more pressures. I wish him luck... and if you would like me to play with a logo, you'd be giving me great pleasure - I'd jump at the chance.