Using European eSim with locked phone?

I've just pre-ordered one of the new Samsung phones. In order to receive the biggest discounts from T-Mobile I needed to buy it on a 24 month installment plan, so I assume that it will be locked to T-Mobile for that time period.

I will be traveling in Europe for ~2 months, and may want to purchase a data only eSim while I'm there instead of relying solely on my T-Mobile international data.  Will European eSim work with my locked phone?