I'll preface this with a couple of things:
1. It depends on how long you've been "low carb" for and how well you've adjusted to fat burning, rather than sugar burning.
2. It also depends what you mean by "low carb"..
I vary from as low as 50g to 150g depending on what I've decided to eat, activity, etc. on any given day.
While I've been lazy recently, I used to crossfit several times a week and train filipino martial arts & bjj a couple of times a week, plus surf at the weekends (often for upwards of 3 hrs at a time, which is a good mix of high intensity and endurance) and I've never had problems with high intensity workouts (crossfit, filipino stick fighting bouts, bjj etc.) performed without having loaded up on carbs prior to the event.
You may want to replace the glycogen stores post workout, but I don't think most people deplete these anywhere near as much as they think and could probably do this with a couple of bananas, 500g of sweet potato, etc.
Also, have a look at this recent Friday success story
Just my humble opinion of course, I'm sure others will give you a different perspective
At the end of the day though, only you can judge what your body needs. So give it a go for a few weeks and see how you feel.