I like the second one.....I think it would have more impact.....so if you are out and about people will see the logo "steemSTEM" and will ask "what is Steem STEM ??" and you will have to promote Steemit to the enquirer!! The more clothing branded with Steem projects the more general increase in the awareness of the platform - perhaps you will have some thoughts on a paragraph on promoting Steemit through branded clothing.