here any IP...means? Does it mean any from the specific pool?
or sopmething else.it means any destination address and any destination port.
If the client has to sent packet to this virtual, what virtual IP....will it be sending request to? Or will it be directly to pool ip, 63.25.36.1?client sends packet to real destination address. pool i.e. 63.25.36.1 is gateway the packet is sent to. when sending packet to the gateway, destination address and destination port won't be changed i.e. they are still real destination address and destination port as client sends.
this is not really exact what you are asking but hoping it can give you some idea how bigip works with wildcard virtual server and gateway pool.
LTM: Per-VLAN Default Gateways by Deb
http://devcentral.f5.com/Tutorials/TechTips/tabid/63/articleType/ArticleView/articleId/247/LTM-Per-VLAN-Default-Gateways.aspx
hope this helps.