RMs are very comfortable and indeed thinner RMs like the RM033 or your RM16 (and recently the RM067) are fantastic to wear.
You have certainly tried a few other references and this is the good way to do it imho.
About Roman vs Arabic numerals, it depends on the watch and on what we like.
I liked the Roman numerals on the RM033. I thought from pictures that I would even prefer the Arabic ones on this model as it looks more modern, more in line with RM's spirit.
However, from other pictures I saw afterwards and a RM033 I saw in a shop window, the dial looks a little more "empty" compared to the Roman numerals that occupy the dial more. Hence, I felt the Arabic numerals were finally not the best choice for me.
This is maybe a feedback you can check if you wish and make your own opinion.
If you already tried it and you prefer it, then no problem of course.
Always nice considering a new RM
Best, Mark