I’m sure he’s a lovely guy, but if this man appears in your marketing collateral, change it immediately.
He is one of the most overused portraits drawn from a well known internet image provider and represents a very lazy approach to creative marketing.
People with a good grasp of either marketing, design, business or advertising will recognise him straight away and you will be found out, your marketing investment wasted.
Lesson: Dare to be different. Your customers are dealing with you, not him.