I bought the 22mm Borealis vulcanized rubber strap just to get the discount on the pre-order on my Estoril 300. I was totally surprised at how comfortable the strap is on my skin. Unfortunately, at the time, I did not have a watch to try it on until now. I recently bought myself a beater diver (the SKX-009) and I am telling you that this strap was tailor-made for this watch. It is so comfortable and does not any dust at all. On the other hand, the SKX OEM rubber strap may be okay for wearing on the outside of a wet suit, but it was definitely way too stiff for daily use.
Thank you Maria for making the vulcanized rubber strap available. I had voted for a 20mm strap as the Estoril has a 20mm lug width. As I have only one watch (namely the Scorpionfish) with a 24mm lug width, I rather see your decision would be in favor of the 20mm design. I currently have my SF on a 23mm Super Engineer bracelet which happen to also fit my Citizen Grand Touring. And I have no intention in putting a rubber strap on either of these two watches for the time being.
Yes, I do understand that other forum members prefer to see the 24mm width strap materialize as this size strap is hard to come by, which I totally understand.
CHANT