I have to agree with @Mick.Ball the 0.0.0.0/0 route will still be in the routing table but the host will see this as a backup route, the 0.0.0.0/0 route that is via your home network gateway will be used as its metric is takes precedence over the one through the Global protect tunnel, if you were, for instance, to configure the Global Protect to tunnel all traffic then the metrics would be the other way around. As it is your include routes are tunnelled and the host will only use the GP default route should the 192 gateway become unavailable, however that would also cut off your connectivity so you would have bigger issues! My logic behind excluding the 0.0.0.0/0 route was simply that by actively excluding it, it may not find it's way into the routing table at all.
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