Why do you have to let the drug Subutex dissolve under the tongue rather than swallow like other pills?

The drug Subutex (and Suboxone) is used for treatment for opiate(narcotic) dependence; as is Methadone. However, with Methadone all one needs to do is swallow the pill, with Subutex and Suboxone it must be dissolved slowly under the tongue--sublingually. I don't like the taste and would prefer to simply swallow the pills, but the Dr. and pharmacist say allow it to dissolve slowly until gone under the tongue. Will I start to have withdrawals if I swallow the pill instead of allowing it to dissolve? Also, I'm taking a daily total of 8mgs...2mgs x 4per day. Is that the usual dosage? What are dosages that seem to work the best or are prescribed most frequently?

: http://alcoholdrugstreatment.info/why-do-you-have-to-let-the-drug-subutex-dissolve-under-the-tongue-rather-than-swallow-like-other-pills