Same here. My Topeak Alien works OK - but my CT-5 has a lot more oomph. I have a CT3 which I will always use in the workshop, too big to carry anywhere tho.

Delicate skinny chains, or those high end uni-directional ones do not care to have pins pushed out and back in - they often snap again. I try to carry snap off joiner pins or powerlinks, but the tool is always useful in emergencies.