I have a Park CT-3 for home use. It's a shop quality tool I bought for it's durability and ease of use. I'll never come close to wearing it out but it's far to big and heavy for take-along.
For take-along on my bikes I have a couple of no longer available Ritchey "CPR 5" tools. These are very small, very light (25 grams) tools whose screw press is operated with the 4 mm hex wrench on my multi-tool. They would never hold up to routine use but for (hopefully) very occasional on-road use they are adequate. Over the years I've used them twice on other people's chains so they do work.