They are absolutely fine for glacial hiking, but they are heavier. If you are doing short sections of near vertical ice (around 15-20 feet or so, around 50-80 degree) something like the Contact would suit your needs much better. If you are sticking mostly to big mountain with less technical terrain, I would go with the contact. I used them almost exclusively on Mt Baker and in other areas of the North Cascades.

Can they? I've read posts from folks saying you could use these for glacier travel, but would advise against it unless you're just taking a short hiking approach to some vertical ice. Unless you're going to be doing some substantial vertical ice climbing, I would look at the Sabretooths which are still capable of some vertical ice as well. If you won't be anywhere near vertical ice and are just looking for crampons to hike in, you can probably get away with something even lighter such as the Contacts.