I was JUST going to ask this!! Good timing...
If one goes with a tripod without the column, I've been told you get better stability. Can you still have the "ease" of vertical control for composing shots (isn't that what the column provides?). And then, do you "need" a taller tripod? (I'm 5'7")
The reason I was gonna ask about this is that someone suggested that I go with the larger Gitzo tripod (the 3540 LS) and the RRS BH-55....a "no post" setup. Much larger than the 2530 with the BH-40 or Markins M10.
(The more I "investigate" this, the more confused I get! I'm further behind in this process now than I was a week ago!!)
There are some the suggest that ANY column will provide an add'l source of viabration....either when down from the "tail" being a "sail" in the wind or when extended becoming a wobbly "monopod" on top of the tripod.
Others contend that, tightened down, the add'l viabration is minimal when all the way down or if only extended an inch or so for fine adjustment. I believe all agree that fully extended it can add unacceptable stability and source for viabration.
I would not consider myself a qualified expert on this subject. I was just answering whether use of the Markins base was mandatory. Right now, I am new to the Gitzo 2541 and M10. It is so much better and more stable, easier to use, etc. than my prior set up, that I cannot think how it could be improved....we will see. I also am not shooting "long" (400, 500, 600, +++) on it.....usually my 70-200...maybe with a 1.4x. My 100-400 is mostly used for sports, where if I use any support it is a monopod (GM2540).
I did see a post, either here of the FM forums, where a guy had a GT25xx and swapped between using the column or the Markins tripod base depending on what he was shooting. So, if the 2530 is fine for you you could start with it and add the Makins base later if you needed it (and if the overall height were enough). Or get a taller GT25xx, or get a 35xx and, if later desired, add an optional column. Lots of choices/decisions...



