Yes, it is worth taking a video cam, particularly since the new formats (DVD, flash drive) have made them so tiny. These just slip into a pants pocket!
No, it's not a good idea to buy a JVC product. I recently had 4 different JVCs fail or needing repairs. My JVC DV camcorder has been repaired twice, with software/chip problems being the cause. Well-documented problems that the company is not addressing. (My other failed pieces were an expensive DVD recorder, a car CD changer, and a VHS/
dvd player). One reason the JVC products are so much cheaper than other brands. Caveat emptor!
Photos taken with a camcorder are usually soft and poor quality. Film taken with a still camera is short and will max out your capacity quickly. I know that it's no longer common to sit the family down to show vacation movies, but do it for your own enjoyment.
The new Canon 950 camcorder would be my first choice, with any cam having a viewfinder (not just the LCD screen) and a diopter adjustment on it getting my nod.
BTW, I am still taking my JVC camcorder to Europe next month, but I am prepared for trouble, so I may buy another DV cam just in case.
Reason for DV? Better image quality and lower cost. The normal DVD/flashdrive cams have lossy recording, resulting in poorer image. Only the new HD machines can equal DV, but they are so pricey.
Also be sure you get a large capacity battery or a backup battery that can recharge while heading out. Maker certain the charger is multi-voltage too.