I doubt that it will be pointless. It is 5 x as androgenic and anabolic as test. I suppose it really depends what you stack with it and your reason for starting so low. As long as you have a reasonable idea what sides to expect and what your expectations for taking that dose are then the only real judge of whether or not it is worth it is yourself.

There is obviously a point at which too low a dose is pointless but that's more to do with merely replacing your own endogenous test levels with a similar exogenous replacement. If you were taking 100mg tren EW and nothing else then I'd say don't do it. Any risk would far outweigh the reward.

Don't ever be persuaded to take more than you feel comfortable with.