A group of us got to the summit on 7/15 using only the switchbacks and we did not need crampons or ice axes. There are a couple of snow fields that you need to traverse (one about halfway up and one right before trail crest) but both have well-traveled tracks which give you pretty solid footing. Having said that, crampons could help in giving you more stability and grip on the snow, especially earlier in the morning when the snow is still solid. Trekking poles also help for balance but ice axe is not necessary.
As for glissading the chute, the snow is quickly melting and rocks are starting to become exposed. Unless you are experienced in glissading and self-arresting with an ice axe, it is not recommended.
