I am going to be doing a fair bit of hitch hiking across Europe in January.

UK to Istanbul is the planned trip if all goes well.

I guess I may have to sleep it rough a few nights. So I am debating, do I take my small one man tent and a sleeping bag or should I purchase a bivvy bag of some kind?

I feel like a bivvy bag could be more stealthy which would be helpful, I don't like the idea of being disturbed while I am sleeping.