Good question! No, it won’t harm you in any way – lots of folks do well on a high-protein diet. This study referred to subjects who were eating a balanced diet of protein, fat and carbs. It’s just that the gains from the protein for each meal top out at about 30g, so eating more protein won’t be of any great help to you either.

“So, a skater of medium build and high-activity level would be looking at needing 85-95g protein daily, but would want to make sure that you’re not going over that 30g ceiling per serving.” Why is it important not to exceed 30 g per serving? I understand that it might not benefit me to eat more, but will it harm me in any way?

Lara bars are good, like Booty said. So are Luna, Clif and Kind. As far as plant-based protein powders, it’s usually a good idea to hit up your local health food store and get some sample packs to see what you like the taste of. Sun Warrior and Vega are big names, but folks usually run hot or cold on the taste. I’m a big fan of buying an unflavoured or gently flavoured vanilla (there are a ton of options out there) and blending it into shakes so that the taste isn’t a deal-breaker.
Also, having some shelf-stable higher-protein snacks like nuts will help tip the protein scales.

I like Lara Bars for having real ingredients, but they are relatively higher in (natural) sugars and not as much protein. I recently found Simply bars that are savoury instead of sweet… NoFair will have some other ideas I’m sure!