Edit: Carl is correct that there is no reason to worry about TA in a vinyl pool as long as your calcium levels are not too high. You might need to add acid more freqently if you are using bleach but there really aren't any other negatives. If the calcium levels are high then the combination of high TA and high calcium can lead to scaling or clouding of the water, especially if you let your pH get out of line and rise.
Evan's right. Of course, too-high calcium is a problem for ALL pools, not just vinyl. If your calcium hits, say 500ppm and your T/A is 180 or 200ppm, you will almost definitely get a milk-white cloud.

But too-low calcium is NOT an issue for vinyl. And when it's low, higher T/A levels are fine.