Opti oops - question

Like a dunderhead, I forgot my Opti this morning. I'm at work and can't head back home. I picked up some Atkins RTD shakes (just for today). I would normally have 2 opti shakes at work. Based on the numbers I think 2.5 or 3 Atkins RTD would be a decent replacement:

2 Optifast shakes

Cals 450 | Fat 21 | Prot 44 | Carb 32 | sug 0

3 Atkins RTD

Cals 450 | Fat 27 | prot 45 | Carb 6 | Sug 3

What do you think? The Atkins has higher fat + sugar and lower carbs, but it is just for one afternoon. I will call my centre but not confident of hearing back within a reasonable window of time.

Personally, I think for one day, it won't hurt. 

If anyone was wondering they called me back at 5pm to tell me it was fine but in general if it's more than 1-2 shakes they actually recommend Boost Diabetic with extra protein powder added in