I have just blogged about Wio + Grove (https://simplesassim.wordpress.com/tag/wio/) and tested it with sensors that were marked as incompatible in the wiki:
- Temperature & Humidity Sensor
- Touch Sensor
- Ultrasonic Ranger
- Gas Sensor
All these sensors worked flawlessly for me, and I have just submitted PRs to fix the information in the wiki, let me know if there are any reasons not to make these changes.