Its not a problem at all. I can reach the split without getting on my tippy toes actually. I added the mini-split after I completed the miter station so I ended up cutting out two or three of those top cubbies.
I have been super pleased with the dust collection! I couldn't ask for better collection honestly, and as we know, that says a lot for a miter saw. The 4" line is coming in from the left then 90°'s to the saw base. I have a short piece of 2.5" flex hose attached to the saw that aims right at the 4" line entry at the saw base. The sawdust pours into the 4" very nicely.