If swordfell was mostly converted/administered by Enoch then I can see an argument that the faithful there might follow Jonsu.
Not me. If someone brings you to a guild/religion/organization/whatever by preaching whatever, it's because the content that was shared meant for something. If said person then turns 180° and turns crazy by spitting on everything he told you, odds are you won't be happy with him.
IF he had been open about his dissent this whole time, or IF he was trying to push for a variant of SA as opposed to dedicated to undermining it, then yea, perhaps he could have had sway among those who converted. But that wasn't the case.