Most SLIs can take a lot of abuse from others so long it's not of a personal nature; they tend to be thin-skinned when it comes to direct accusations such as criticising their ethics, motives and or competencies. They certainly wouldn't take betrayal very well either. When they write someone off, they tend to never look back. More than a few are consummate grudge-holders; some even seem to remind themselves periodically why certain individuals will remain forever persona non grata.

a.k.a. I/O