PECL Memcached with Drupal memcache

I have both PECL memcached and PECL Memcache installed, however by default Memcache module is using PECL Memcache, I don't want to delete one or another of these PECLs, but would like to use PECL Memcached with Drupal Memcache Module using D7.

I have been through the installation guide of memcache module, but wasn't much fruitful. It says it'd use pecl memcached by default, but that doesn't seem the case here. It'd be great if anyone could point me to any link or guide for me to accomplish this, and using Unix socket would be more advantage, as my db server and web server is in same machine.