While I do use my wifi at home I have travelled extensively and used my 3G. I recently spent a week away and I used Skype every day for 20-40 mins, surfed, checked my email, etc and I only used about 400 mb.
I would suggest you verify which 3G ipad to get. Make sure he has sufficient coverage with either AT&T or Version before you decide. Unless he starts streaming a bunch of video I think 3G might be a really viable solution.
Btw, I'm 60 and while I do need my reading glasses I find the iPad screen size just fine because one tends to hold it closer to their eyes than sitting at a desk in front of a monitor. Comparing holding an iPad or sitting at a desk and looking at a 15" monitor I would pick the iPad every time.
I would suggest you verify which 3G ipad to get. Make sure he has sufficient coverage with either AT&T or Version before you decide. Unless he starts streaming a bunch of video I think 3G might be a really viable solution.
Btw, I'm 60 and while I do need my reading glasses I find the iPad screen size just fine because one tends to hold it closer to their eyes than sitting at a desk in front of a monitor. Comparing holding an iPad or sitting at a desk and looking at a 15" monitor I would pick the iPad every time.