Anyway I must admit that I am surprised by your answer, who the heck brings a portable player with a bigger screen just to check sharpness, that is just stupid, the only time I see people who bring "bigger screens" is those professionals who has a 15" notebook and assistant (and these are real pros with a real reputation), ..
First of all, there's no reason for saying stupid in your reply. To each his own. I never said for sharpness. I also didn't say a bigger screen.
I actually saw a video tutorial by a pro who does use a portable player(7") hooked up to his camera so he can see a much BETTER representation of his photo and also so he can show his client right then and there a big and higher rez pic.
That's where I got my idea. Plus the OP, Js, desired the articulating screen. So even if they weren't going to go 'pro', this is a good idea.
Who brings a portable dvd player?
Many people have them in cars, when they go on airplanes, etc.
If not a portable dvd player(which by definition is EASY to carry around --portable---duh!), if you have a netbook(that can fit in a SMALL bag or purse if you're a female), you can use that as well. I was on a music video shoot and the still photographer had his notebook with him to transfer and show off his shots to everyone there.
If the OP doesn't like my suggestion fine, but don't open your mouth and look like a fool by saying it's not practical. A small, PORTABLE dvd player, is easy to carry around and IS practical for a vacation.
Btw, REAL pros don't rely on the pic on the LCD screen, they check the histogram.