I am going to guess that if you keep low carb and moderate protein that NK is possible with JUDDD. However since I don't seem to be able to get into NK, I am not going to stress over it.
I am thinking that I will not eat over 25g to 30g of protein in a sitting, and total carbs for all days will be no more than 30g with net being no more than 15g. So that pushes my daily total of possible protein up as high as 90g if I reach the upper limit for all three meals-which is unlikely. More likely my protein on ud's may go up as high as 75g. On dd's my carbs may creep up a bit as I use veggies as filler, we will have to see.
I think that what I have decided to do for travel, now and in general, is to go as low carb as possible, not worry about uddd, and start it back on the day I get back. For me, LC is very easy when I travel, even if I am with DH or whoever.