Also, the following study is interesting in that it found tendon glides to be more effective than nerve glides. Alas, this is for CTS, so it's not clear (at least to me) that it would apply to TOS as well, or what the tendon glides for TOS would be.

The comparative effectiveness of tendon and nerve gliding exercises in patients with carpal tunnel syndrome: a randomized trial

Conclusion: The combination of tendon gliding exercises with conventional treatments may be more effective than that of nerve gliding exercises with conventional treatments.

http://www.ncbi.nlm.nih.gov/pubmed/21430512