To preface this, I was a frequent customer and huge fan of the old Caribou Coffee formerly located in this spot.
I visited Peet's this morning for their grand opening, and was very pleased with my experience there.
The employees were friendly, though a bit flustered since it was their first day.
My beverage was decent, and the chocolate scone I got was pretty good! They had a pretty wide variety of both beverages and pastries.
However, the seating inside the shop itself was pretty scarce, in comparison to Caribou. I ended up sitting out in the mall, instead. I could see this being a problem for them when they start to get more customers.
Overall, I don't think Peet's will ever fully replace Caribou for me, but it's good enough.
Give them a try next time you're in the area!