I would like to discuss the Omega sea master model, specifically the newest model with the co-axial escapement, this model is produced with a blue bezel and blue wavy dial, and it is the same for both the GMT model and the standard.
I purchased one of these Watches a while ago and wanted to wear it for slightly more smart occasions, but found that the steel bracelet was just too chunky and casual to fit elegantly under a shirt cuff, as for the alternative rubber bracelet, I found that not a viable choice in terms of presenting an elegant Wrist Watch.
Omega do offer a crocodile option which is in fact designed for a different watch, but what I did was look elsewhere for a solution to this problem and (sacrilege) fitted a crocodile strap from a Ulysse Nadin Quadrato (pictured in the below picture) with an official omega brushed steel buckle, and as you can see the result is quite elegant, with the raised ridge of the Nardin strap complimenting the masculinity of the Sea master, while still conveying a sense of elegance that only Exotic leathers can. I not sure this combination is for everyone, many people consider it a bad ides to use anything other than approved parts for a watch (Rolex for Rolex, omega for omega etc) however I found the Omega version in navy a little too plain and uninteresting to my taste.
This combination is around the same cost as the omega option, as with Omega you have the option of the deployant buckle, whereas the Nardin one only offers a tang buckle, the omega set of strap and buckle costs around £280, and the Ulysse Nardin Strap only is £260, the Omega tang buckle is £10 fitted at the Omega store, however you must be prepared to be quite polite to them , as you are fitting a non Omega item, most people can do it themselves, but it is always nice to know it has been done properly.