The best grapple was the offhand hook so you didnt even have to change weapons :P just tarzan through the level... and yes that make for fun grapple frags... more embarrasing than getting killed by spark shooting blaster.

quetoo source tree looks complicated... they no longer support software rendering... i will look into old source snapshot or quakeforge but that could take awhile... would have been nice if the maemo port in garage had source code.