Hydroconquest GMT Rubber Straps

Hi currently saving up to buy the blue Hydroconquest GMT.

For those who have the rubber strap what is your thoughts on it?

Also, I am going to buy the bracelet and hopefully the rubber strap at the same time, has anyone done this before? Any issue with doing it this way?

Hoping to buy from a longines boutique so I'd think it be okay to get it from there?

TIA.