Vantaggi
You would be working with some of the old school ML, TL and chances are they have little exposure to working with any other company. You would have all the time to run a second business and if you happen to be the native of same place as you manager you won a lottery. If you ever forget to say yes sir, you rating would go down in next appraisal. But if you are good at saying yes sir, you are a champ.
Svantaggi
Only if you care about your career else no con. If you have worked with a service provider before chances are you would be smarter then your TL who must have spent his life in this same company. There is no concept of architect, TL, managers would advise you not do do anything that doesn't suit their taste. No new tech or process.
