I just tried the 'Hide' feature. I then did a boolean operation on the sphere with the hidden line and the line reappeared. grrr :)

I find the lines tend to make it difficult to see the smoothness of intersections between booleaned objects and/or fillets. Oh well, I'll just have to be patient.

Thanks for the quick reply and keep up the awesome work! :)

 

Edit and update:

Ooooh! I think I've found a way to check out my model without the lines. I do a dummy export and view the mesh without the wireframe.