I began my catechumenate with the Bishop Vezelis group, who make their flock sign a paper saying that they believe that Bp. V and his underling Bishop Giles are the only true bishops. This, at least, is the rumor, and they didn't deny it when asked.
That was when I took a walk. Now, is everyone who signs this paper a schismatic? It kind of looks that way, doesn't it? Yet it's not so clear cut as with the Orthodox, for instance.
In the case of Bp. Schuckardt, I will be more clear -- no, he was not schismatic. That was the best he could do in the circuмstances, or so he felt, one assumes. The Old Catholics had valid Holy Orders despite utilizing them illicitly. I don't see how this could be construed as a schismatic act, if he thought it was what he had to do to preserve the Church. Then again, at that time, many of the VII bishops were still real bishops... But they were trapped in the belly of the beast.
I don't see who can judge Bp. Schuckardt for what he did there. It would be like attacking Abp. Thuc for his various imperfections, which is unconscionable when you consider how few people were sedes at that time and how alone he really was. What Bp. Schuckardt did later is something else and can't be defended, of course. Bp. Schukardt, in a way, was the first sede -- so it was important for the devil to get to him, I have no doubt, to discredit him and thus the movement. Well, it worked.