Hi, Abby!
Glad to have you with us.
I think the best thing is to bring easy to quickly eat things to work. You could try bringing plain kefir (yogurt) with SF syrup in it, make smoothies, bring cut up veggies and a little portion of hummus to dip them in, etc.
Other things like the mini quiches, turkey rollups, etc. could also work. Once you're on P2, you could make small sandwiches, bring cheese and crackers, or even bring some protein (like laughing cow cheese) to put on the bread that also has a little fat...that will make the bread less likely to drive you to eat more and more. Plus, with the cravings gone, I think you'll do really well with eating bread.
I've never looked up the ingredients of the bread at Cheesecake, but I've eaten there several times since starting SBD, and I have never had problems with either bread. In my opinion, even though there is honey in the whole wheat, I think the glycemic index would be a little lower than the sourdough... not sure though.
BTW, when you get into P2, the low carb cheesecake with splenda strawberries and splenda whipped cream is FANTASTIC!!!
It's a special treat for me when I go to Cheesecake and someone else gets some...I don't feel deprived!
Good luck...I know it can't be easy surrounded by all that fantastic food. But think about all the calories you're burning running around at work!