Yes it's definately more effort with carbs I agree, I find with eating low carb that it's easier to manage the highs and lows, less spikes which ultimately can cause more long term damage. I also find I have less hypos, I had one yesterday my first in about 12 days, eating carbs I was having 2-3 hypos a week as well as numerous correction doses.
However in favour of carbs, I found a couple of months ago that I was out for the evening on a hen do and ate 4 slices of pizza, had a few wines, danced till about 2am and woke the next day at 8 mmol/l, this was the only time carbs have worked favourably for me, obviously the exercise helped too !!