同时使用MacPorts和RubyGems有什么不利之处吗？

I'm new to Ruby on Rails, and I'm in the process of setting it up on my OS X system. Most guides seem to recommend using MacPorts to install Ruby and RubyGems, then using RubyGems from there on to install gems. I've noticed that MacPorts also offers many gems (though they're missing some and others seem a few releases behind), and I'm worried that it will somehow conflict with the stuff I'm installing using RubyGems.I'm new to Ruby on Rails, and I'm in the proces