By the way in the article you mentioned about Profoto B1.
Profoto B1 is not suitable for parabolic modifiers due to its strobe head design which send most of the light forward than to all direction. I am not sure if frosted dome can spread the light evenly. But let's your test results.
With the glass dome, they are still more directional than a bare flash tube, obvious if you pop the flash looking at in on-axis, vs 90 degrees off axis. The frosted dome is also going to be a much more diffuse source than a bare bulb. From what I've seen though, the D1/B1 seem to get the desired effect inside Broncolor Paras. It may not be exactly the same distribution or softness of light as with a bare flash tube, but I've never seen a side-by-side comparison.
I have the Parabolix 55" and deep 30" headed my way, and I'll be using them exclusively with the Flashpoint Xplor 600. I have the handheld extension head, which is what I plan to mount on the focusing rod, leaving the power pack at the base of the stand.
B1 will get minimal effects on deep para because it needs more light to the side and to the back.