Whether you have RHCE certification, or other Linux IT Certifications, your Linux Certification will make you more money in the job market.
The truth is that employers know of and respect the various Linux certifications. Linux and other open source OS are widely in use in private industry already and their popularity is spreading. As various distros of Linux become more refined and widely accepted the need for qualified IT personnel to support these networks will grow.
However it is not wise to be only Linux certified, a better idea is to be certified across multiple disciplines. Linux IT certifications are not as widely known as some others such as MCSE, CCNA, or PMP. So a Linux cert while it will make you more money needs to be supplemented by at least one other non Linux certification.
A Linux certification makes you bilingual in a sense among computer operating systems. So go ahead and get a Linux certification and supplement it with your PMP or CCNA. Your salary will surely be a lot higher because of it.
