I also use enhanced movement and i have seen no problems, i can't imagine there would be either, at worse the massive movement you get anyway even with penalties is going to make any maluses less impactful. Lets assume due to casualties after a battle it knocks off 20%. Default movement in EB is 125 so your movement would be 100, with both submods together at 500 it would just become 400, which is still quite significant.
I think my favourite feature so far is definitely the tactical camera though its far too close in the Medieval 2 engine i mean just compare them both - https://imgur.com/a/uMMeO6q. Its an adjustable view up or down that allows you to see pretty much everything and it still looks pretty good especially with the unit detail setting so they don't turn to sprites at distance.
Have noticed when sieging too i get a "script" ancillary that says nothing, is it working okay and i suppose is meant as a trigger for the various events?