View images on CompactFlash on iPadPro using Lightning to USB 3 adapter? With my Canon WiFi-enabled DSLR, while on location I'm able to wirelessly copy stills to my iPad Pro and view the shots on the iPad Pro.

I'm trying to do same with my WiFi-less Canon DSLR.

Is this possible by inserting the CF card in a card reader connected to "Apple Lightning to USB 3" accessory which is then plugged into the iPad Pro.

a) What is your experience with this setup?
and 
b) What is another alternative?
Apple says:


  Add even greater capability and versatility to your iPad Pro by powering the Lightning to USB 3 Camera Adapter with a USB Power Adapter. Then you can connect USB peripherals like hubs, Ethernet adapters, audio/MIDI interfaces, and card readers for CompactFlash, SD, microSD, and more.


It sounds like using a USB card reader is supported. However, you may need to plug a USB-C power adapter in to your Lightning->USB3 adapter to get it to work. Thankfully there are USB-C battery packs if you want to stay mobile.