Someone was asking me the other day about switching over to the horizontally split cowl and if I intended to go that route. I've had pretty good luck with the standard cowl setup as shown in the plans, so I made a short video the other day demonstrating the process of taking it off and putting it back on. Hopefully this will help in making a decision on your cowl. I will point out that the devil is in the details. If it doesn't fit right, it's gonna be a real bear to insert the hinge pins, so you must get that right or you'll hate the results.
https://www.youtube.com/watch?v=SDlpl5D755MJeff