Your Multi-Domains plugin: does it allow subdomains and does it clash with (previously installed) WP

Hi - I'm about to install your Multi-Domains plugin:
https://premium.wpmudev.org/project/multi-domains

Question 1:
As well as having http://www.domain1.com, http://www.domain2.com etc
I also want http://subdomain.domain1.com, http://subdomain2.com etc

I'm sure the plugin works fine with my requirement for top level domains - but does it also handle my need for subdomains? Or do I need to also use this other 'Domain Mapping' plugin of yours alongside it:
https://premium.wpmudev.org/project/domain-mapping

Question 2:
I previously installed WP Domain Mapping plugin:
http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/

Will this plugin clash with your Multi-Domains plugin? i.e. do I need to remove it or can I leave it there and use your plugin for future sites I create?

thanks very much for you help,

Andrew