The mobility and reassurance that I will have something to write on (as long as i remembered to charge it), was really a game changer for me. Recently graduated student and its been more useful at my job than school lol.
Look into the 90 day return policy, If it doesnt work for him then at least youre not wasting monies.
At work with clients (graphic design, car wrapping shop), I can just have them sign it on the tablet and use that for designs. Anything they write, notes, etc, its always just there, and handing clients the tablet certifies what they do is safe. It takes a lot of stress off because I know where to find my information.
There are templates in the OS of the RM, some graphs/gridded sheets, etc, but your husband can always download a PDF as is and edit it. I think it would be a good choice but the RM is just my choice, not being distracted on the job while getting the notes and info down is super rewarding and imo worth it. Im really happy I didnt get mine until I was 27, 20 year old me wouldnt have gotten how special it is.
Go you for thinking this deep into it, good luck on the choice! :)
Depends on what youd use the keyboard for. I got one after like 2 years of owning one and even though i dont use it daily, i think it was worth it.
As far as switching over, I havent looked back, I love using my remarkable whenever I can.