Gen bracelets aren't going to fit as good as that rep bracelet will--especially on the perfect sub--not only will you have to jam it in between the SELs & the lugs (because the cases are different sizes and the gen bracelet is wider), but they won't line up properly as the rep has lugholes drilled higher on the case than the gen does.
Besides, with no electronics, mechanics, or precious stones or metals on the gen bracelet, why in God's name would you spend $1,500 on $1.50's worth of steel?
I'd say no one would even be able to tell the difference, but they will because your watch will be two completely different colors. The gen is 904L steel and the rep is 316 stainless. Very different. Save your money for a ton of reps or a nice Tag gen or something.