Tubular Glue vs Tubular Tape I'm looking into going for tubular tyres and I'm new to this part of the world. As far as I understand there are two main options to mount the tyre:

1. Tub Glue which sounds like kind of a pain in the ass time-wise and requires some effort, but seems like a very solid solution to fix the tyre to the rim.

2. Tub Tape like the one from Velox, which seems like a very easy and fast way to mount the tyre but for me personally it doesn't seem rock solid.

Can anyone with the experience of using both explain pros and cons of these methods.

Thank you guys! You're the best!!
I've glued hundreds of tubulars and learned the craft from some of the best mechanics in the sport including a former wrench with the Motorola team and a former Mavic Service Course mechanic. These days tubulars are really only used in cyclocross, track and at the very top level of the sport. 

There are some very distinct downsides:


Safety. Improperly glued tubulars can roll off in a corner. This is not to be taken lightly. Even top pros have rolled tubulars (Joseba Beloki famously went down hard in the 2003 Tour de France, effectively ending his career) On a long descent dragging your brakes can heat up the rim enough to soften the glue resulting in a rolled tire. 
Expense. A decent tubular costs significantly more than a good clincher.
Repair. You can't patch a tubular during a ride. You pretty much have to replace the entire tire. This means you need to carry at least one spare tire per ride (and hope you don't get more than one flat!) This BTW pretty much negates any weight savings which are trivial to begin with.
Hassle. Mounting tubulars is a multi-day process, especially if you're mounting them on bare rims for the first time. Getting the tire onto the rim is significantly more difficult than mounting even the toughest clincher. 


Now, all that said if you're going to move forward I strongly suggest using mastik instead of tape. Tape isn't that much less messy and the bond seems to be less consistent then a good gluing job. 

Park Tool has as good a guide as any on mounting tubulars as anyone: http://www.parktool.com/blog/repair-help/tubular-tire-gluing

A few other tips:


Do NOT use 3M Fast Tack! Some people swear by the stuff. I've personally seen several tires roll from using it. This is especially true with Continental tubulars. Fast Tack actually dissolves the glue that holds the base tape to the tubular casing. Someone a few years back did a study on tubular cements and Fast Tack did very poorly (http://kuktl.dept.ku.edu/bicycle/Cusa1.pdf) Stick to Continental or Vittoria. 
Mount the tires to a clean rim, inflate them to high pressure (120+ psi) and let them sit for a while (as in several days). This will make it much easier to mount them. 
People will tell you to put a foot in the tubular and then pull up until you hear a popping sound. They claim this is stretching the tire to make it fit easier. These people are idiots. The popping your hearing is the base tape detaching from the casing or threads in the casing tearing. Don't do this!