I've addressed some of the documentation questions you had in the comments, so I'm going to attempt to answer your real coding questions here.
To get your master view, ExchangeService.FindConversation is the right method to use. It does support paging by limiting the results to the number of conversations specified by the view parameter. You could call it on demand to get older and older results.
To get your detailed view, because ExchangeService.GetConversationItems isn't available on Ex2010, you can use ExchangeService.FindItems with an IsEqualTo SearchFilter that searches for items with a matching ConversationId (see code below). There's more information about search filters here: How to: Use search filters with EWS in Exchange.
In the following method, I limited the properties of the FindItems call by specifying a property set, and not returning all the properties. If you wanted to return all the properties, you would just remove the line that sets the PropertySet.
static void forumFindConversationItem(ExchangeService service)
{
ItemView view = new ItemView(10);
//Remove the following line if you want to get all the properties for each message. This will limit the properties returned in your results (and save time).
view.PropertySet = new PropertySet(EmailMessageSchema.Subject, EmailMessageSchema.DateTimeReceived);
SearchFilter.IsEqualTo conversationFilter =
new SearchFilter.IsEqualTo(EmailMessageSchema.ConversationId, "AAQkADIwM2ZlM2ZlLWMwYjctNDg2Ny04MDU0LTVkMTFmM2IxY2ZjZQAQANEDR7V/30dphLiNOLSTuxE=");
FindItemsResults<Item> results = service.FindItems(WellKnownFolderName.Inbox, conversationFilter, view);
}
Once you have each ItemID (returned by the code above) you could use the Bind method to get all the properties on each item.
Hope that helps. I'll follow up when the versioning issues for the methods on MSDN have been updated.