Personally, I like to do TSK best after some other training. Like a form. GGFFK, or a weapon form. Not too much, but just practice enough too what the Chinese would say "gets the chi flowing". I found that doing TSK after that feels much better then in a "cold start". Of course there are days I cant do a full training session so I only do TSK, but I prefer to do it after a little other training. After that I will usually start with my lin gung training and the rest of my session.
Others I heard of saying they do TSK to warm up for the rest of their training session. That is quite a different route. Others end their session with TSK. Personally, often the training made me quite tired and/or sore already so doing TSK in the end often gives me problems focusing on the set because of tired muscles etc...
What do you prefer? I made this a poll so people can shed their view anonymously as well