The MQTTitude binding is basically going to give you a Presence Detection Solution. It will turn on a switch item when the location of a friend falls within the pre-defined geo-fenced region. You can then use this event (switch was turned on) to trigger a rule and perform other events from OH2.
I don’t use it personally (I have another presence detection solution with the Unifi binding) but I think that the answer to your question is yes.
btw: OwnTracks is the new name of MQTTitude but the binding name was never updated to OwnTracks 
Yes, only the MQTT Binding (note: not the street name… see json payload info below).
Since the OT mobile clients will directly publish their locations on MQTT topics, you could use only the MQTT binding to communicate to OH2 the required info (subscribe to the topic and pull the data from there).
Now… what to do with the data (the json payload published in the topic) and how to use it to display for example a google map or the street name where a friend is on your sitemap… that’s another journey (but it’s possible)
Here is an example json payload coming from OT Android mobile client app (v1.1.7):
{
"_type": "location"
"tid":"S6",
"acc":"12",
"batt":"59",
"conn":"m",
"doze":"false",
"lat": "47.056987",
"lon": "10.623918",
"tst": "1389104761"
}