Absolute NO. The bootloader and the sim unlock is totally different.
You can unlock your bootloader for free IF your manufacture date is week 29, 2011 or earlier. If you have younger phone (manufactured on week 30, 2011 or later) you must use paid methods (you can try with the free method but the probability of a hard brick is more than 90%).
To unlock you sim lock you must use paid method (only the plasmatool was free in a limited time period).
So, if you unlock your bootloader, it will NOT unlock your sim lock, and if you unlock your sim, it will NOT unlock your bootloader.
Note: the first bootloader unlock method relocked sim lock if you unlocked it with omnius.