I think it’s a gray area. SP allows the use of the 1960 Roman Breviary. The MD is proper to Benedictines (which includes Cistercians) that use the older pre-Vatican II monastic office. There are very few monasteries that do. I know of three for sure and I think there’s one in Italy as well. In N. America there’s Clear Creek (Solesmes Congregation), in France, Fontgombault (also Solesmes Congregation) and Barroux which was formerly schismatic but came back into communion with Rome and was allowed to keep the older Office and Mass. If you’re somehow affiliated to one of those houses as an Oblate then it would be liturgical, outside of that, I’m not so sure.
To be liturgical BTW, the MD must be prayed in Latin.
Personally the
full Monastic Office (even without Matins) either pre- or post-Vatican II is probably over the top for lay use. Moreover if you regularly attend an OF Mass, I would say that the LOTH or one of the
post-Vatican II monastic office variants would make much more sense. The LOTH and the Mass really are all one liturgy of which the Mass is the summit. For the MD and the OF Mass, the liturgical year won’t line up, for starters. The MD will also follow the Benedictine calendar of saints, and while it is mostly the same as the Roman calendar, there are some significant differences. It really doesn’t make much sense to pray the MD or one of the Monastic Offices unless you’re somehow attached to a monastery (or live near one and participate in their offices regularly so it would make more sense to use that Office when praying away from the monastery).
In my own case I’ve done the rounds of a few Offices as an Oblate: Monastic Schema A which is the post-Vatican II version of the office used in the MD; schema B which my abbey uses, and the LOTH. Personally I’ve found a great sense of balance with the LOTH in my current circumstances; when I worked from home almost all the time, I preferred my abbey’s schema, but now 3 days a week I have a monster commute so the LOTH does it for me. I pray Lauds and Vespers and Sunday Compline in Gregorian chant in Latin; I chant the psalm first, then re-read it in French (my mother tongue). The mixture of Gregorian psalmody as a mantra, and then the silence to meditate the psalm, gives me a great sense of peace and a great sense of satisfaction that I’m praying with the Church. I’ve also found ways to draw “traditions” out of the LOTH. They’re there if you know where to look for them by using various options. Lauds and Vespers take me about 20 minutes, which seems just about right. The Office of Readings, which I recite recto-tono in French, also takes about the same time. The other offices and Compline are about 10-12 minutes chanted or just around 8 minutes recited. I’ll go back to my abbey’s office when I’m retired
One has to keep in mind that the MD is designed for monks who spend a great deal of their day in choir chanting it. Even today monks that use the post-Vatican II version of that Office (more or less everything the same as the LOTH except for the Benedictine psalm schema of 250 psalms per week), are allowed to use the shorter LOTH when outside the monastery, or assigned to an external apostolate. The LOTH is a great gift to the Church. While the MD (or the Breviarum Romanum) were never intended for lay use, the LOTH is (and it is even encouraged by the Church), and is very well adapted to those with busy lives, clergy or lay alike.