HTC EVO 4G : Set Up OS To Receive All Types Of Messages In One Centralized Location?

I'm a brand new member here. I am a long-time and loyal Blackberry user. While several people over at the Crackberry forums are anxiously and excitedly awaiting the "new" CDMA device coming from RIM, I'm a little bored by the release of My Current Phone v.1.1. I like MCP v1.0 quite a bit, but I'm losing faith in RIM's ability to set an industry standard.

Anyway, I'm almost certain I'm going to be picking up the EVO when it's released next month. I've been doing lots of research lately, and I'm pretty excited about all that this phone and the Android OS have to offer.

One feature that I absolutely love and worry I won't be able to live without is my universal or combined--or whatever you want to call it--inbox. In terms of my interactions with my contacts on my blackberry, I do one of two things:

1. I start typing their name, hit menu when I've get their name highlighted, and select the action I want to do (call, sms, mms, instant message, facebook, etc.), or

2. I open my inbox where absolutely anything of any type incoming from anyone is located.

I really like having that very simplistic operation, and I'm not sure I could give it up.

I did some searches, and there are some conversations about this, but I wasn't able to find a definitive answer. There are actually quite a few threads where people asked this and didn't get a response. I'm hoping someone with some in-depth knowledge of the Android software can provide an answer.

Can I set up the Android 2.1 OS to receive all types of messages (visual voicemail, texts, emails, gchats, mms, facebooks notifications, etc.) in one centralized location? Also, I will want to be using the gmail application. I rely pretty heavily on google services, and that is one of the reasons the EVO is particularly intriguing to me. I wouldn't want to give up that functionality.

Then, if the answer is that this cannot be done, I would love to hear about how much of a drawback it is. Have other blackberry users adjusted okay? Is it not too much of a hassle to have to go through different applications to get your incoming correspondences? Or is it a total pain that maybe should indicate to me that the EVO isn't really for me? Okay, sorry for the long post. I'm looking forward to hearing all of your feedback, and I really appreciate the help.