I doubt you could find agents would would agree to "share" you if they knew. Any agent worth his salt would not "share" you with somebody else. If an agent would agree to share you it's probably because they are new and/or inexperienced or not very successful.
Real Estate is like a relationship between an agent and their client... Like a husband, wife... Boyfriend, girlfriend kind of deal.... as soon as that trust is gone and their is no communication then the relationship is over. It could be built back up...but mostly likely not. Save yourself the headache... don't two time an agent... A good agent will recognize when one of their clients is cheating... it's not hard to figure out.
Once I really know my clients, I will do previews, make calls for off the market homes, and do things that I won't do with a casual, not too serious client.
If despite the feedback you receive, you do choose to work with more than one agent, I suggest you at least be honest with the Realtors whose time you take up.
You need a local expert - and the definition of "local area experts" can differ from place to place.
In my area, we don't usually cover more than a 5 -10 miles radius - and that's a wide expanse!
Some agents just work 1 town, and are not terribly active in adjoining towns.
In some parts of the country, from what I have seen online, that isn't the case, and agents can and do cover a wider spectrum.
Once you find someone with whom you feel comfortable.......give them your loyalty.
Real Estate Broker
Short Sale & Foreclosure Specialist (SFR)
Certified HAFA Specialist (CHS)
Broker Price Opinion Specialist (BPOR)
There is no advantage to working with multiple agents as it only wastes everyone's time, including yours. Ask friends and family members for referrals of agents who are knowledgeable in the area where you are looking to buy. Talk to a few different agents. Most agents don't mind the interview process if it will assure your loyalty to them.
Best of Luck,
Your best bet is to find someone really good. And if you decide you don't like the one your hired feel free to fire them and hire someone else, but don't waste your time and theirs by handling it that way.
Do you think that one Realtor would have access to LISTINGS that the other Realtors do not have?
Do you think that this smacks of LOYALTY on your part?
Would you like to be treated like that?