Best option : bomb proof your roll and go hardshell.
Second best option. :go with which ever you have the most confidence and skill in.The main objective is to have fun and enjoy the outdoors.
The main advantages of duckies are ease of transport. / storage and not having to roll.Still., if you are doing creeking you need a good ducky self rescue, by which I mean reentry in rapids not just swimming gear into eddies by yourself. I started in duckies doing overnight self support ducky rafting type runs then got addicted to rapids and started doing river running and light creeking with kayakers.I tried getting into hardshells but could never bomb proof my roll, would do fine in pools but swim too much in current, kept trying -would get three combat rolls in a row at a playspot and think "finally " then the next time I got spanked where it should be easy to roll, I 'd swim and feel like throwing a kayak about a hundred yards.Had a very good /reliable ducky self rescue until I got fat and older and it is more difficult for me.It would be so much easier to just roll well.I didn't 't used to mind swimming class 4 now I kinda 'do and it is inhibiting.
Nomad is an awesome boat wish I had one.