I suppose I should elaborate. I don't necessarily agree that some sort of "agreement" with Rome is a good idea. I will admit that there are many ways it could go wrong, and there are some strong reasons not to do so, but the fact of the matter is that it is above my pay grade, so to speak.
And whether or not it happens, it will not change the validity of the SSPX's masses, nor is it likely to adversely impact their ability to confer Sanctifying Grace, nor are the priests going to spontaneously start preaching heresy and modernism from the pulpit. So given all of that, why would I not avail myself of the grace of attending mass?
As someone stated in another thread a week or two back, attending mass is not a political statement, and my attendance at the mass of a "reconciled" SSPX would not be a statement of acceptance of Modernism or VII, or anything similar. It would simply be a Catholic attending mass to attempt to sanctify his soul, same as it was last Sunday.