the_rev has constantly stated that miles jesu is not a religious order, there is no more proof than what their website has to say.
QUOTE
Vocations in Miles Jesu
We call ourselves a faith family because our membership includes men and women; laity and priests; celibate, married, widowed and single people, all united together as a large family under one General Director. Miles Jesu adapts itself to the vocation each one has received from Jesus and helps each one to be faithful to that vocation. Although there are priest and bishop members of Miles Jesu, the lay members comprise the vast majority of overall membership (more than 90%). Miles Jesu, then, is not a Third Order, that is, a lay addition to an existing religious congregation. Nor is Miles Jesu a religious congregation.
What all the members of Miles Jesu have in common is:
1. An unwavering loyalty to the Holy Father and the Magisterium of the Church in faith and morals. Miles Jesu is neither "conservative" nor "liberal." We are simply Catholic,
2. A thirst for holiness in a spirit of availability, each one according to his or her own state of life;
3. A strong devotion and reverence for Our Eucharistic Lord;
4. A tender and loving devotion to the Immaculate Heart of Mary.
5. A clear understanding and practice of true lay spirituality and apostolate in temporal affairs and ordering them to the plan of God" (LG, 31).
Each person is a living responsible member and commits himself or herself according to his own capacity. As our Constitutions say, "Any human institution can only be built on unconditional and perpetual dedication. Those members who have it are the backbone of it and the ones who get the most benefits."
Follow the links to the left for more information about specific vocations in Miles Jesu
Even if they do take vows it does not mean they are brothers or sisters.