Mmmm chai.
I've been frequenting sambalatte for my studying needs. There are plenty of outlets but not always plenty of seats near outlets due to the popularity. There is an upstairs area as well. I feel sambalatte is more of a hangout then it is a place to actually get stuff done.
That being said...the coffee and pastries here are quite amazing and delicious. There are numerous specialty drinks and even sandwiches. The chai is absolutely delightful.
Don't even try to study on a weekend day unless you have a good set of earbuds. It is quite distracting hearing people talk about their dojos, meditation and vast amount of real estate.
There is a delightful outdoor seating area for those nice Vegas days. The staff is extremely friendly.