Probably not really a question for a male to be answering, but i thought i'd add my opinion.

I answered 'No i would use formula'. Main reason is i cant see anything wrong with FF kids. I was a FF kid and grew up normal. IMO anyway

I never got any childhood illnesses, just the odd cold etc...So saying that FF kids are more likely to catch illnesses and diseases is a crock.
My weight has never been an issue. My BMI has always been in between 20 & 25. So FF didn't make me obese.

My DS was FF from day 1 and is thriving. I was involved from day 1 and i am glad that i could share in the experience with DW. The thought of my little man being attached to, or guzzling down some other womans milk does not appeal to me.

No regrets. IMO

Mick