I do take the splitter off. The roads in my area are terrible, lots of dips, so when not needed it comes off.
I have had one issue, a lady on her cell phone.
She couldn't wait for me to pull out of a parking lot so she went around me, almost hit my car. So, I pulled forward to avoid her and hit the splitter. I guess she was so busy talking that she didn't realize I was waiting for a clearing so I could pull out, she went around me and almost got creamed by a Ford pickup.
She's very lucky that I couldn't get into the lane she was in or I would have shoved her cell phone...
I now have quick release fasteners holding it on so it's easier to get on and off.
Honestly, it can be a PITA.
