[orca-list] Using mate and gnome at the same arch system

[Vsevolod Popov <sevapopov13 gmail com>]

Hello everyone.
Recently I successfully started using Arch with mate and practically 
completely replaced Windows with Linux.
But I also read that gnome 40x gets some accessibility renovation and 
would like to try that out.
As far as I understand, there is nothing bad against using gnome and 
mate on the same system, as far as I understand some users do that here.
I have next questions.
1. I tried to install gnome, I did that by using the command:
#pacman -S --needed gnome
2. Then, when switching options in lightdm session manager, I noticed a 
lot of options related to gnome. 2 times there were repetitions of 
gnome, then gnome classic, gnome xorg and gnome wailand.
Which one gets accessibility improovments and which one is better to use?
I tried to use gnome xorg, but when I wanted to assign shortcuts, the 
settings dialog didn't seem to be accessible with Orca.
I will appreciate any tips.
The main question is:
Isn't there anything harmful when using 2 desktop environments on 1 system?
Thank you all in advance.
--
regards,
Vsevolod
https://github.com/sevapopov2/