The only way to actually use a tripod, is to take it with you wherever you go. This brings up the question on how to transport and carry your tripod. The Fine Art of Carrying a Tripod discusses multiple ways of transporting your three legged friend.
Amongst the multiple ways of carrying your tripod are sensible ones like The Hand Carry – simply carry the tripod in your hand and The Shoulder Carry – put it over your shoulder, like a soldier carrying his rifle.
But there are also ways which will get you noticed on the street, such as the Shoulder Perch and the Radio Antenna method, which make you place your tripod over your neck or shoulders in different ways or styles.
Probably the most popular ones though are the tripod bag and the tripod strap solution, where you carry your gear over your shoulder using a strap either attached directly to the tripod or the attached to a small dedicated tripod bag.
Similarly, attaching your tripod to your camerabag is probably a viable solution and many camerabags have specific extensions to support tripods. These supports are particularly useful when getting to your destination, but when hiking around, just like the dedicated tripod bag, requires you yo unpack your tripod for use – an extra step that most likely will prevent you from using your tripod in the first place.
The beauty of having your tripod in your hand or at least over your shoulder implies that you have to use it, since you already have given up one hand for transporting it. So what could be more natural as to take your camera and immediately mount it on your tripod already at hand.