Does it worth using LVS /Piranha for this simple conf ?

Hello,

I want to add a failover procedure for 2 identical servers.

At init time, server A is a Reverse-Proxy to web server B.
Clients refer to both servers using a Virtual IP address. Each of the server
can start the service of the other one: server B can behave as a Proxy and
server A can behave as the Web server.

There is no NAT. Virtual and real IP addresses all belong to the same
subnet.

Does it worth (and is it possible) to use LVS ?

It seems to me it's worth only if someday we plan to add new machines to
build a real cluster of web servers. Is this true ?

Thanks,

Jerome