District Commander, Superintendent Win van der Velde, said the sentencing showed the courts were behind a zero tolerance approach to violence.
"This sentencing brings to a close an incident involving two young men who had been drinking for some time at home and had then become embroiled in a domestic dispute," he said.
"It's a scenario encountered all too often, in that our staff arrive to a domestic situation to find those involved turn on them and its something people need to realise cannot and will not be tolerated."
Mr van der Velde said while he acknowledged the lengthy sentences handed down indicated the level of seriousness of the attack, it was also important to note the offenders had taken some responsibility for their actions.
"In this case the maximum term of imprisonment that could have been handed down was seven years.
"Taking a starting point of six years eight months the judge took into account the pair's early guilty pleas, their age and other mitigating features in awarding their sentences.
"While we would prefer not to have to deal with these matters in the first instance when those involved take responsibility for their actions, it is always better for the victims and others linked to what happened to see the matter concluded at the earliest possible instance."
Mr van der Velde said the incident was all the more topical as it happened last December, at the height of the holiday season.
"People can find themselves under a lot more pressure than normal at this time of year with additional bills over Christmas, the possibility of family members living on top of one another for prolonged periods of time and of course a greater than usual level of alcohol consumption.
"If you allow it, before too long things can get on top of you and its important that if you feel like that is occurring you take time out or seek help before things get out of hand."