Initial impressions

Though I'd share my own experience since all reviews published so far are paid for sponsorships. I've not played golf with it yet and that will be a few more weeks since we still have snow on the ground here in Sweden.

The screen is transflective so it works fine in direct sunshine, the more the better. Not sure how it will hold up in the shade when the weather is bright though. A bit more brightness would have been nice.
The device is unnecessarily big and heavy for the screen size. I have big hands and can use it one handed. If you can't use an iPhone Pro Max one handed you'll have to use both hands with this device. I think it is too big and too heavy for your pocket but will of course work fine on a push cart, where I'll put it.

I have an issue with downloading aerial imagery. Got it working using an Android phone but still no go with my iPhones. The process is very slow. You'd probably want to do this before heading to the course.
Speed when interacting with the device is good enough.

Would be nice if you could zoom in on both types of maps.
Have not tried the launch monitor or putting functions.

For me it's a keeper. I'd prefer to use my Apple Watch and not a Garmin watch and want to have automatic shot tracking and the Virtual Caddie. 

I'll try to update when I've had a chance to use it on the course.