I have a mix of Arabic numbers, Arabic numbers and markers and Roman numerals. To this point I don't have anything with markers or indexes only. That's not saying I won't have one in the future. I just haven't seen one that goes to the top of "I've got to have it now" list.
I add watches based on price, style, function but most importantly it needs to "sing" to me. Some I thought I wanted just didn't do it for me once I tried it on.