I've created CWM/TWRP installation zip with exFAT and NTFS drivers, and mounting script. It can be downloaded from here:
Now, if you have rooted your Lenovo Yoga Tablet 2 (any screen size), and have SuperSU installed, just download UPDATE-android-fs-1.0.1-install.zip, install the same way, and start using exFAT (strongly recommended!) or NTFS (not recommended!) microSD.
To safely unmount for hot unplug, use Android settings. For mount after hot plug, better to reboot your tablet.
the microSD file system is checked before mounting, and, if errors are found, it is mounted as read-only. So, if you find out that you can't write to the microSD, safely remove it and check (allowing to fix errors) it under Windows. It is strongly recommended to check and fix under Windows, because both exFAT and NTFS are produced by Microsoft, and no open source software is able to correct the file system errors correctly!
I have Yoga Tablet 2 8''. But the installation zip contains binary files for a number of platforms, and may work on other Lenovo Android devices. Being manually installed, the drivers are confirmed to work on:
Lenovo Vibe Z2 Pro
Lenovo Vibe Z2
so I see no a reason why they will not work being installed via recovery console.