Traineeship at big bank VS small Gas Trader job

So I am currently in the 9th month of a 1 year Traineeship in the Private and Wealth Mngmt devision at a Tier 2 bank in France. I had no desire to work in IB and liked the salary so took this job. Now, after my time here I realize that private and wealth managmnt is just being the clients muppet and it is a very commercial role. If i want to switch internally it would take me over 6 years to end up in a more analytical/trading job

I have an offer at a fairly small Gas Trader company. (think less then 25 ppl). They want to hire me as trader/business Analyst. I would have an increase in pay but I would have to move cities so in the end I would -after costs- make the same.

Now:

Is switching from a trainee program at a bank considered "giving up" for not completing the program? would this hurt my CV in the long run?

Would any other big bank still want to hire me after this gig? Is Gas trader not to superniche compared to Private/wealth mangement?