Going to try OB 3-way

Yes, I'm new to this! Now that it's out of the way, I'd love some input:

I have a little open baffle project started and my plan has been to really keep the design to a minimum. I bought a pair of 3-way speakers meant for in-wall installation and going to make the baffles myself. If there is anything I don't like, I will adjust components or speakers as a learning platform.

They already have a crossover but here is what I noticed: the 3.5" midrange has a sealed basket and the 1" dome tweeter is essentially sealed too.

Does that negate the effect of open baffle??